The above Royal Mail Green Issue stamps were issued on 15 September 1992 by Royal Mail and feature the following stamp designs:
24p Acid Rain; 28p Ozone Layer; 33p Greenhouse Effect; 39p Bird of Hope. The The Osprey first day cover with the
Aviemore, The Osprey,
Special Handstamp
postmark
has been produced by Benham
and features these stamps which can make a very collectible and lovely gift.